Coin-controlled lock



June F. W. KASSLER com CONTROLLED LOCK Filed Dec. 29. 1925 4Sheets-$heet 1 w .0 a 1 MM INVENTOR I '1? Wffams-Zen A'ITORNE-YS June 211927.

F. w. KASSLER CO IN CONTROLLED LOCK Filed Dec. 29, 1925 4 Sheets-$heat 2QITNESSES .Ma'm/ZM g h 2 ATTORNEYS June 21, 1927.

F. w. KASSLER com CONTROLLED LOCK Filed Dec. 29. 1925 4 Sheets-Sheat I5ATTORNEYS June 21 1927.

. 1,633,411 F. w. KASSLER COIN CONTROLLED LOCK 4 Sheets-Shet 4 FiledDec. 29, 1925 23 I'Sl dim ATTORNEYS Patented June 21, 19 27.

' FREDERICK W. KASSLER, OF ST LOUIS, MISSOURI.

, COIN-CONTROLLED LOCK.

Application filed December 29, 1925., Serial No. 78,206.

The present invention relates to improvements in coin controlled lockingmechanism, and is peculiarly adapted for application to a door or otherswinging closure such as is commonly employed to guard the entrance topay-as-you enter compartments. However, the lock is capable of a wideand varied field of utility and may be associated with swingingclosures, sliding closures, and other types of doors, box covers,vending machines,

etc.

Oneobject of the invention is to provide a lock in which the last coininserted will be visible at the exterior of the lock until the lock issubsequently operated by. an-

other coin. Thus, when the lock is used to control pay-as-you-entercompartments, a spurious coin will be visible to an attendant during thetime that the person passing the coin is in the booth or compartmentcontrolled by the lock. I

A further object of the invention is to provide novel method 0fattaching the lock casing to a door, in such a manner that it cannot beremoved from the outside of the door by the use of screw drivers orsimilar tools. More specifically the attachingscrews for the lock casingare concealed and housed by the plate which covers the coin compartment,this plate being retained in place by a key operated lockingmechanism,-and beinginipossihle' for a wet coin to stick in thepaseways, a circumstance which frequently arises when gravity is reliedupon to effect coin ejection. g p

A further object of the invention is to provide means for rejectingcoins of smaller opened. By virtue of this construction itis should beused to operate the lock. mechanism is preferably in the nature of acoin chute so constructed that the proper coins .will'be directed intooperative position, and the smaller coins will be by-passed into the boxwithout enterin an operative position. A further feature is thearrangement, by which the small coins will fail to operate theregistering mechanism or the indicating mechanism of the lock, even ifthe coin should by accidentreach operating po sition.

A further object of the invention is to providea lock equipped withindicating or signalling mechanism, registering mechanism, mechanism forpreventing the insertion of a coin while the compartment, is occupied,spurious coin indicating mechanism, and rejectsize and denomination thanthe coin, which This ing mechanism for improper coins, so that i thelock will be substantially foolproof in; operation.

Further objects are to provide a lock of rugged durable construction,which is extremely unlikely to get out of order, which will be highlyefficient in use, and which may be manufactured with comparativeeconomy.

l ilith the above noted and other objects in view, the inventionconsists in certain novel features of construction and combinations andarrangements of parts, as will be more fully hereinafter setforthandpointed out in the claims. The invention may be more fully understoodfromthe following description in connection with the accompanyingdrawings wherein-- 1 is a view in frontelevation showing the lockapplied to a door. I

2 isa fragmentary view in rear elevation of the loclvwith the rear coverplate and the by-passing coin chute removed.

Fig. 3 i a complete view in rear elevation with the rear cover plate andcoin chute removed, but showing the new position of the parts after thelocking bolt has been retractec;

Fig, 4} is view in vertical longitudinal section on the staggered line4-4: of Fig. 2.

Fig. 5 is fragmentary longitudinal sectional view on the line 5 5 ofFig.2.

Fig. 6 is a transverse sectional view on the line 6-6 of Fig. 2.

Fig. 7 is a fragmentary transverse sectional view on the line 7 -7 ofFig. 2.

Fig. 8 is a longitudinal detail view through the upper end of the lockcasing showing the coin blocker in operative position.

I Fig. 9 is a view inelevation of the indicator lever.

Fig. 10 is a fragmentary view in rear elevation of the lock, parts ofthe casing being broken away and in section for clearness.

Fig. 11 is a similar view, but showing the position of the parts whenthe inside knob fill The lock casing is in the nature of a rectangularbox, including a front Wall 15, side walls 16, top and bottom walls 17,18, anda removable rear wall 19. In attaching the lock casing to a doorsuch as 20, the back plate 19 is first secured in position by the use ofsuitable securing devices such as the screws 21. upper corners, hookshaped lugs 22 adapted to engage with pins 23, projecting inwardly fromthe side walls 16 of the casing. At the lower corners of: the plate 19there are provided projections 24 having threaded sockets 25 therein forthe reception of screws 26, these screws passing through openings inlugs 27 fixed to the lower corners of the front wall of the box.

It will be noted that the lower front wall of the box is offset as at28, and that this offset portion provides an opening 29 at the boxfront. Within the opening there is an inwardly projecting flange 30adapted to serve as aseat for a removablerplate 31. The projections 26terminate flush with the outer face of the flange 30. Secured to therear face of the cover plate 31, adjacent the lower corners theerof, area pair of books or lugs 32 adapted to engage behind the flange 30. Thecover plate carries a lock casing 33 for a conventional type of tumblerlock shown in elevation at 34 (Fig. 1). The lock 34 is adapted toactuate a bolt 35 engageable with the upper portion of flange 30,whereby when the hooks32 are engaged with the lower portion of theflange, and a suitable The back plate carries at its key inserted toproject the bolt 35, the heads of the screws 36 are concealed and it isimpossible for one to remove the casing from the door by the use of ascrew driver. Any unauthorized removal must be accompanied by the use ofa key to retract bolt 35 to gain access to the attaching screws 26.

The plate 31 in addition to its function as a concealing means for thescrews, serves as the closure for the coin compartment, which isconstituted by the lower end of the box.

At the upper outer edge of the casing there is provided a coin receptionslot 36 surrounded by a guiding device 37 for directing a 'coininto theslot 36. Secured to the inner face of the front wall of the casing are anumber of guide ways 38, 39 and 40 for the bolts, to be later described.7 Bolts and keepers.

Slidable transversely of the casing between the guides 38 and 39 is a,locking bolt 41, the end of said bolt being engaged by spring 42 mountedon a suitable supporting stud 43. This spring tends to normally urge thelocking bolt outwardly through an opening 44 (Fig. 12),, in the sidewall 16 of the casing. Mounted below the locking bolt 41 is a secondbolt 45, sliding between the guide ways 39 and 40. The inner end of thisbolt is acted upon by a spring 46 'mounted on a supporting stud 47, andnormally urging the bolt to fully projected position through an opening48 (Fig. 12) in the side wall of the casing. v

The projecting ends of the bolts'41, are bevelled as at 49 and 50respectively for camming engagement with the edge 51 of akeeper. Thekeeper is in the nature of a casing 52 secured in any suitable manner asby lugs 53 passed through ears 54 to the frame 55 for the door 20.Preferably the keeper is cut away as at 56 for the reception of a guardplate 57 forn'iing an extension of the front wall 15 of the lock casing,this'guard plate preventing insertion of a sharp instrument into thekeeper to forcibly retract the locking bolt.

The keeper is formed with a central web 58, and a roller 59 carriestrunnions 60 turn ing in the web and 1n one end of the keeper,

this roller being accommodated in a cut away portion 61 of the keeper.

When the door 20 is closed,- the roller 59 always engages with the bolt45 to retain the same in retracted position, and whenever the lockingbolt 41 is retracted to permit the door to open, the bolt 45 will springoutwardly under the influence of its spring 46 as soon as it clears theroller 59. The n'ieans for latching the locking bolt 41 in retractedposition includes a pawl 62 pivoted on stud 63 and formed with teeth'64adapted to engage with a pin 65 projecting rearwardly from the bolt 41.The pawl is normally urged into position to engage thepin by a spring 66anchored to a stud 67 and acting on a stud 68 projecting from a pawloperating extension 69. The extension. 69 is curved to offer eammingsurface 70, against which a stud 71 on the bolt 45 bears when the bolt45 is in retracted position. Thus, when the bolt 45 is retracted itswings the pawl 62 into the position shown in Fig. Bearing in mind thefact that the bolt 45 cannot be projected while the door is closed, andthat the bolt 41 must be retracted in. order to permit opening of thedoor, it will be seen that as the door is opened, with the bolt 41retracted, the bolt 45 springs outwardly, releasing extension 70 andpermitting spring 66to swing the teeth 64 into latching en-" gagementwith the pin 65. Conversely upon closing of the door, the roller 59forces the bolt 45 inwardly, acting through the stud 71 and extension 69to trip the pawl and release the bolt 41. e

The invention as thus far described is applicable to Various types oilocks other than coin controlled locks. For instance I have shown atumbler lock 72 secured to the front wall 15 of the lock casing, saidtumbler lock being operated in aconventional manner by akey (not shown).This lock may include a rotary element 73 carrying a crank arm 74 whichengages in a notch 75 in the bolt 41 to effect retraction of the latter.Thus the bolt 45 serves to control thelatching and releasing of the bolt41 independently of the other instrumentalities which may be utilized toretract the bolt 41.

00in delivering and rejecting mechanism.

deliver coins directly into the'lower end of,

the lock casing. Chute-SO as best seen in Fig. 10, includes atransversely disposed attaching arm 81. One apertured end of this arm isscrewed as at 82 (Fig. 6) to a lug-83 projecting rearwardly' from theface of the bolt guide 89. The other apertured end of the arm 81 issecured as by screw84 to a bracket 85 projecting rearwardly from -a bridin iece 86 this brid in niece bein b b 7 h 23 F countersunk in the boltguides 38, 39, and

being accommodated in a cut out portion 87 (Fig. 2) of the locking bolt41.

Between the coin chutes 77 and 80, there is interposed atransverselyextending plate 88 having a selector slot- 89therein.

It will of a coin for operating the look. We may assume that the coin 76 which elfeots operation, is a nickel. In this instance the slot 89will be of such a width that it will block the passage of nickelstherethrough, and will permit the free passage of pennies. Thus, when apenny is inserted'through the entrance opening 36, it will slide downthe chute 77, pass freely through the slot 89 and be guided by the chute88 directly into the bottom of the casing. When a nickel is inscrted, itwill pass down the chute 77 partially through the slot 89, where it willbe checked by the end walls of said slot. The walls of the slot 89 serveas a flipping or turning device to turn the nickel over, and alter thepath of its gravitational movement, so that it will slide over theguiding depending apron portion 90 ofthe plate 88, will pass through aslot 91 in the bolt guide 38, and will enter a slot 92 in the lookingbolt 41. This slot may be plainly seen in Fig. 6, and it will be notedfrom Fig. 4 that the slot extends, all the way through the locking boltand through the bolt guiding member 39, so that when the coin reachessmaller coin directly to the bottom of the lock casing Without effectingoperation of any part of the mechanism.

0oin-controlled bolt-operating mechanism.

Projecting through the front wall of the casing andhaving bearings inthe bolt guiding member 40, is a spindle 93 carrying an operating handle94 at its outer end. At its inner end, the spindle carries a crank arm95, from the free end of which a pin 96 pro jects forwardly into a slot97 cut in the bolt 41. The crank arm may be connected to the 'spindle'93.in any convenient manner, as by screw 98, and a spring 99 acting on thecrank arm and anchored to a stud 100 normally retains, the crank armswung to the position of Fig. 2, in which position the crank arm abutsagainst a stop shoulder lOlon the bolt guiding member 39. v

The slot 97 in the bolt providesclearance for. free turning movement ofthe crank arm to the rightwh en there is no coin in place in the slot92. By operating the handle 94,

' the crank arm 95 may be swung freely from i the position of Fig; 2 tothe position of Fig. 3 where it is stopped by the bracket 85. When a.coin is in the operative positionshown in Figs. 2 and3 however, movementof the crank arm '95 to the right, causes the pin 96 to engage with thecoin, and by virtue of the coin engaging the right hand end of the slot92, the lock bolt is retracted or shifted to the position of Fig. 2through the intermediacy of the coin.

It will thus be noted, that by inserting a coin into the lock, andturning the handle 94, the locking bolt l1 will be retracted, and as thebolt is held in retracted position, and the door bolt opened by thehandle 94, bolt -15 will be released by its keeper roller 59, and willspring upwardly, thereby releasing the pawl 62 and permitting the pawlto engage the pin on the locking bolt 41, whereby the locking bolt isheld in retracted position.

When the user steps inside of the compartment controlled by the lock,and grasps the inner handle 103, closing the door after him, the bolt4:5 will again be retracted as it engages the keeper roller 59, therebyengaging the tail piece of the pawl 02, and tripping the pawl to releasethe locking bolt 11 which will again spring into locking position.

00in displaying and ejecting mechanism.

In 2 it will beseen. that the bolt 45 has a slot 104 therein adapted toregister with the slot 92 in the bolt 4-1. In order however, to preventthe loss ot a coin by the accidental release of the handle 9 1 after thecoin has been inserted and the handle turned to retract the bolt, I soarrange the slots 10 1 and 92 that they do 110111110913 intoregistration until after the door has been opened. In other words, asthe dooris opened and the bolt 415 is urged by its spring 16 toprojected position, incidentally latching the retracted bolt 41, theslots 92 and 10-1 will register, and the coin will drop through theslots between a plate 105 and a window 106 in the front of the casing,at which point the coin is supported by a pin 107 until such time asanother coin is inserted and the look again operated.

By virtue of this construction, the last coin inserted will always beexposed through the window 100 and the attendant who is usually employedto take care of a number of coin controlled booths, will be otlered avisible indication of any spurious coins or slugs which have been usedto operate the lock. It will be noted that this indication will beavailable while the patron is still in the booth.

The pin 10-? (Fig. 2) is carried by one arm 108 of a bell crank, theshorter arm 109 of which is t'ulcrumed on a stud 110 secured tothe rearface of the plate 105. The elbow of the bell crank has a slot and pincommunication 111 with the lower end of a link 112, said link beingpivoted at its upper end as at 113 to an operating arm 114: which inturn is pivoted at 115 to the bolt guiding member 38. A. coiledcontractile spring 116 acting on the end of arm 1'08 and anchored to astud 117 secured to the lower end of the plate 105, normally retains thebell crank in the position of Fig. 2. In this position the pin 10? is inoperative position to prevent a coin from dropping below the window 106,and in this position also, the link 112 is pulled downwardly, and theoperating arm 114-. is depressed so that a camming extension 118tormingpa-rt of this arm is disposed in the path of a coin 76 resting onthe bolt 15 in operative position to effectre turn engage with thecamming extension 118 of the operating arm 11 1. lifting the operatingarm, pulling the link 112 upwardly, and swinging the bell'crank 108 tothe po sition of Fig. 3 against the action of spring 110, wherebv thecoin supported on the finger 107 will be released.

in this connection it is to be noted, that it a' coin should be stickyor moist and tend to adhere either to the glass window or to the plate105, it will be positively ejected by an incoming coin. That is to say,the "new coiii dropping through the slots 92 and 104: will strike thecoin before the window" and tend to dislodge it, and it the coin is not.

dislodged by this action, it will'b'e positively ejected as the corner119 of the slot 10 1 engages the upper coin and exerts a downwardCfillflflll'fig' action thereon.

amenZZy-controllecl bolt-operating mac/ 1a I his m;

I. have previously described the manner in which the lock may be openedbyturning the outer handle 9 after the insertion of a. CD111, and themanner in which the locking bolt automatically snaps back to lockingposition when the door is closed and the patron enters a. compartment.It is obviously 'necessary to provide some means for permitting; thepatron to open the door from theinside to gain egress from thecompartment.

With this end in view. the knob 103 above mentioned, is connected to aspindle 120 hav-' ing bearings in the back section 19 'o'fthe.

casing. The spindle at its iniier'end carries crank 93111 121 (Figs.10and -11),'which may be formed with an extension 122in the nature of aspring finger. Crank-arm 121,

acted on by a spring 123 indicated in dotted lines in Fig. 1 as anchoredto a stud 124 on the rear plate of the casing. This spring normallyurges the crank arm 121 to the'left, or to the position of Fig. 10 whereit is stopped by lug 125 on the rear casing plate 19. As the knob 103isturned to the right to shift the crank arm 121 to theposition of Fig.11, the crank arm engages with an ear 126 on the inner end of thelocking bolt 41, whereby the bolt is manually retracted and the door maybe opened. Closing the door after a patron has left the booth, eil'ectsresetting of the locking bolt in the manner above described.

Registering mechanism.

Secured to the side wall- 16 ofthe lock casing as by screws 127, is aregister 128 which may be of entirely conventional con struction. Thenumeral wheels of this register are exposed through a window 129 in thecasing wall. The operating lever 130 for the register 128 is connectedby link 131 to an arm 132 of a bell crank including a second arm 133pivoted as at 134 to the rear face of plate 135. The elbow of the bellcrank is connected by link 135 to a lever 136 fulcrumed at one end on astud 137 secured to the front wall of the casing. Lever 136 is formedwith a rearwardly extending block or lug 138, to which the upper endoflink 135 is pivotally connected. Lever 136 is engaged by an extension139 of the operating arm 114 as this arm movesupwardly. Thus retractingof the locking bolt through the intermediacy of a coin,-'lifts the arm-114, lever 136 and link 135. Link 135 acts through the bell crank 133,132, and link 131 to swing the operating arm 130 of the register to theright and cause the device to register once.

There is a positive return for the register operating mechanismcontrolled through the intermediacy of the crank arm 121 operated by theinside handle knob 103. It is for this purpose that I provide the springfinger 122 on the crank arm 121. Pivoted at 140 on a guide bracket 141for the lever 136is a bell crank including arms 142 and 143. The arm 143carries a pin 144 adapted to be engaged by the finger 122 as theknob 103is turned to the right, and the arm 142 engages the block or extension138 on the lever 136 to positively efiect depression oflever .136 andlink 135.

As a patron leaves the compartment, he is compelled to turn the knob 103in order to unlock the door, and as this knob is turned, the train oflinkage for the registering mechanism is reset.

Indicating mechanism. The lever 136 which is shown in plan in Fig. 9,includes the enlarged end 145, formed with a shoulder 146 engaged by theextension 139 and operating arm 114. At this enlarged end of the lever136 there is displayed suitable indicia 147 seen in Figs. 1

and 9, and comprising, the words Vacant and Closed, or Vacant andOccupied. The normal position of lever 136 shown in Fig. 2, and with thelever in this position, the word Vacant will appear through the window148 in the front of the casing. lVhen a patron inserts a coin, opens thedoor, and enters the compartment, the position of the lever will beshifted to that shown in Fig. 3 as above noted, and the Closed sign willappear at the window. WVhen the patron leaves the compartment, and turnsthe knob 103, he effects not only resetting of the registeringmechanism, as above described, but resetting of the indicating lever 136to again show the Vacant sign through the window 148.

00in blocker.

Means is provided for preventing the in-' sertion of a coin through theslot 36 when the compartment is occupied. This means includes a,U-shaped yoke 149, the legs of which are pivoted as at 150 on studsprojecting laterally from the side walls of the coin chute 77. One legincludes a tail portion 151 curved for coac-tion with a camming roller152 mounted on the block 138. The other leg of the yoke is acted upon bya light torsional spring 153 (Fig. whichserves to retain the yoke in theoperative position of Fig. 4.

When, through the intermediacy of the operating arm 114, the indicatinglever and the block 138 are lifted, the roller 152 ongages with one armof the yoke 149 and swings the intermediate portion 154 of the yoke intoposition to efl'ectively block the insertion of a coin through the slot36.

The return movement of the coin blocker to inoperative position iseffected nonpositively; that is to say, the resetting mechanism whichrestores the indicating lever 136 to the position of Fig. 2, simplywithdraws the roller 152 fromengagement with the coin blocker andpermits the light restoring spring 153 to act, and return the coinblocker to the position of Fig. 4. It will of course be understood thatthis spring is not powerful enoughto reset the registering mechanism orthe indicating lever, and that these mechanisms can be reset onlythrough the positive action of the bell crank 142, 143. In connectionwith this bell crank, it may be noted that it is normally held in theposition of Figs. 2, 3 and 10 by the action of an associated spring 155Operation.

. It is believed that the operation of the locking mechanism will beentirely clear from the above detailed description, but it may be wellto summarize the manner and times at which the various parts of themechamsm are operated.

We will assume that the compartment is empty, that the indicating leveris in the position to show a Vacant sign, that the registering mechanismhas been. reset after its last operation, and that the door is closed.In this position the locking bolt 41 is projected and the bolt 15 isheld in retracted position by the roller 59. I

A coin is inserted in the slot 36. If this coin is of improperdenomination it drops through chutes 77 and 80 into the bottom of thebox. If the coin is of the proper denomination it drops through thechute 77, is flipped over by the plate 38 and guided into operativeposition in the slot 32, resting upon the bolt 11. The handle member 9-1is now turned, causing the pin to shift the coin 76 to the right in Fig.2, thereby retracting the bolt 11. Simultaneously with the retraction ofthe bolt, the coin the camming extension 118 of the operating arm 114:,and actuates the following mechanisms. Pin 107 shifted by its link 112to release a coin before the window 106. The indicating lever 136 isswung to a new position, e: posing a Closed sign through the window 148.Movement of this lever cts through the roller 1 2 to move the coinblocker to operative position, closing the mouth of the entrance slot36. lifovement of this lever also acts through linkage 135, 133,132 and131 to actuate the register 128.

It will be borne in mind that all of these operations have been takingplace as the locking bolt was being retracted and before the door hasbeen opened. As the door is opened, the bolt e15 springs outwardly,permitting the coin to fall through the slot 10 1 in the position beforethe window 106. Outward movement of the locking bolt also releases thepawl 62 vnich latches the locking bolt in retracted position. the coindrops down through the slot 1041-, the operating arm 114 is released,and the spring 116 restores the pin 107 quickly so that it engages thenew coin and holds'it in place before the window.

At this time the coin blocker is still in blocking position, theindicating lever still shows a Closed sign, and the register has notbeen reset. The patron now enters the compartment and closes the door,whereupon roller 59 engages lever 15 which trips the pawl 62 andreleases the locking bolt 11. The latter springs outwardly, and the dooris again locked. No other mechanism is effected by closing the door.

When the patron grasps the knob 103 to open the door from the inside,the locking bolt 11 is again retracted by virtue of the engagement ofthe crank arm 121 with the lug 126. At this time also, linger 122 actsthrough the bell crank 1 12, 143 to reset the registering mechanism andshift the indicating lever so that the latter displays a Vacant signatthe window 1&8. This move ment of the lever 136 permits the spring 153to restore the coin blocker to inoperative position out of the path ofcoins entering through the slot 36. As the patron leaves the compartmentand closes the door, the bolts are relatched in the manner abovedescribed without affecting any of the'othcr mechanism. r

Attention has been previously called to the rotating operating linger 74 which is operated by a key inserted in the lock 72, so that anattendant may gain access to the compartment. Operation of the bolt bythis look does not affect the indicating inechanism, registeringmechanism, or the coin holding pin 107.

In the event that a penny, by virtue of slightly sticking to the coinchute 77, or in some other manner, should drop into the slot 92 in thelocking bolt, the penny. will function to permit opening of the lock.However, the penny cannot effect operation of the indicating mechanismor registering mechanism because it will be too small to engage with thecamming extension 118 of the operating arm 114. Furthermore this pennywill be prominently displayed before the window 106, and will bepromptly dis covered by an attendant.

Various changes and alterations mightbe made in the general form andarrangement of parts described, without departing from the invention.Hence I do not wish to limit myself to the details set forth, but shallconsider myself at liberty to make'such changes and alterations asfairly fall within the spirit and scope of the appended claims.

I claim I 1. In a coin controlled look, a locking bolt normally springprojected into locking position, means operative upon insertion of acoin for retracting said bolt, automatically acting means for latchingsaid bolt in retracted position, and means operative only after saidbolt has been fully retracted and latched forshifting the coin toinoperative position. v

2. In a coin controlled lock, alocking bolt normally spring projectedinto locking position, means operative upon insertion of a coin forretracting said bolt, automatically acting means forlatching said boltin retracted position, and means operative only after said bolt has beenfully retracted and latched for positively moving the coin toinoperative position.

3. In a coin controlled look, a locking bolt, means operative uponinsertion of a coin for retracting said bolt, means fora lilo latchingsaid bolt only when the latter venting movement of a coin to inoperativeposition prior to the latching of said bolt.

4; In a coin controlled look, a locking bolt, means operative uponinsertion of a coin for retacting said bolt, a pawl for latching saidbolt in retracted position, a second bolt acting on said pawl tonormally retain the latter out of latching engagement with the lockingbolt, said second mentioned bolt normally preventing movementof a cointo inoperative position, and permitting such movement only after thepawl has been released to latch the locking bolt.

5. In a loclr of the class described, a lock casing adapted to besecured to a door and including a locking bolt, a handle at the outsideof the door, adapted to act through the intermediacy of a coin toretract said bolt, a handle at the inside of the door, adapted todirectly retract said bolt, registering mechanism including a train oflevers act-uated positively by the coin as the outside handle is turnedto retract the bolt, and reset positively as the inside handle is turnedto retract the bolt. s

6. In a lock of the class described, a lock casing adapted to be securedto a door and including a locking bolt, a handle at the outside of thedoor, adapted to act through the intermediacy of a coin to retract saidbolt, a handle at the inside of the door, adapted to directly retractsaid bolt, registering mechanism, and signalling mechanism operatedpositively through the intermediacy of a coin as the outside handle isturned and reset positively by the inside handle as the latter isturned.

7. In a lock of the class described, a lock casing adapted to be securedto a door and including a locking bolt, a handle at the outside of thedoor, adapted to act through the intermediacy of a coin to retract saidbolt, a handle at the inside of the door, adapted to directly retractsaid bolt, registering mechanism, and signalling mechanism operatedpositively through the intermediacy of a coin as the outside handle isturned and reset positively by the inside handle as the latter isturned, the signalling mechanism including signalling lever, and theregistering mechanism including a train of operating levers actuatedfrom the signalling lever.

8. In a lock of the class described, a lock casing adapted to be securedto a door and including a locking bolt, a. handle at the out- I side ofthe door, adapted to act through the intermediacy of a coin to retractsaid bolt, a handle at the inside of the door, adapted to directlyretract said bolt, registering mechanism, and signaling mechanismoperated positively through the intermediacy of a coin as the outsidehandle is turned and reset positively by the inside handle as the latteris turned, the signalling mechanism 'a handle at the inside of the thebolt retaining the coin in position before the winincluding a signallinglever, and the registering mechanism including a train of operatinglevers actuated from the signalling lever, the means for operating thesignalling lever from the outside handle including an operatingarmrengaged by the coin as the bolt is retracted.

9. In a lock of the class described, a lock casing adapted to be securedto a door and including a locking bolt, a handle at the outside of thedoor, adapted to act through the intermediacy of a coin to retract saidbolt, door, adapted to directly retract said bolt, registeringmechanism, and signalling mechanism operated pisitively through theintermediacy of a coin as the outside handle is turned and re-setpositively by the inside handle as the latter is turned, the signallingmechanism including a signalling lever, and the registering mechanismincluding a train of operating levers actuated from the signallinglever, the means for resetting the signalling lever including a bellcrank and operative connections between the inside handle and the bellcrank. 10. In a coin controlled lock, a lock casing having an entranceopening for coins, a locking bolt sliding in said casing and having aslottherein, an operating handle, a crank arm attached to the operatinghandle and formed with a stud working in the slot, means for deliveringcoins from the entrance opening to the slot in the bolt, whereby thebolt may be retracted through the intermediacy of the coin as the handleis turned, a slotted member adapted to be brought into registration witha slot in the bolt after the latter has been retracted and to permitejection of a coin, and a spring ejector finger acting on the coin topositively eject the same when the slots have been aligned. 11. In adevice of the class described, alocking bolt, means acting through theintermediacy of a coin to retract said bolt, said casing having a windowtherein, means for passing the coin out of operating position intoposition before the Window after the bolt has been retracted, and meansfor retaining the coin in position before the Window until the bolt issubsequently retracted through the intermediacy of another coin.

12.111 a device of the class described, a locking bolt, means actingthrough the intermediacy of a coin to retract said bolt, said casinghaving a window therein, means for passing the coin out tion intoposition before the Window after has been retracted, and means for dowuntil the bolt is subsequently retracted through the lntermedlacy ofanother coin, said retaining means including a spring linger supportingthe coin before the Window, and means operated, upon subsequent ofoperating posi- 14. A device of the class described in IDOVlD the fingeraside and permitting the coin before the Window to drop out of place.

18. A device of the class described in 5 claim 12, wherein the incomingcoin actuates the mechanism for releasing the coin before the window.

14 A device of the class described} in claim 12, and including anejector for positively ejecting a coin from operative posi tion afterthe bolt has been retracted, and linkage connecting said ejector Withthe retaining pin.

FREDERICK W. KASSLER.

